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  <title>Oracle数据库备份失败，错误详情包含“RMAN-06059: expected archived log not found, loss of archived log compromises recoverability”</title>
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  <h1 class="topictitle1">Oracle数据库备份失败，错误详情包含“RMAN-06059: expected archived log not found, loss of archived log compromises recoverability”</h1>
  <div>
   <div class="section">
    <h4 class="sectiontitle">现象描述</h4>
    <p>Oracle数据库备份任务失败，错误详情包含“RMAN-06059: expected archived log not found, loss of archived log compromises recoverability”。</p>
   </div>
   <div class="section">
    <h4 class="sectiontitle">可能原因</h4>
    <p>执行备份任务前，备份了日志的文件系统（DeviceManager上以L开头的文件系统为存放日志备份的文件系统）被删除，导致Oracle主机中存在失效的日志文件，进而备份失败。</p>
   </div>
   <div class="section">
    <h4 class="sectiontitle">处理步骤</h4>
    <ol>
     <li><span>登录Oracle数据库主机。</span><p></p>
      <ul id="oracle_gud_0140__oracle_gud_0020_zh-cn_topic_0000001656760969_ul1983714162204">
       <li id="oracle_gud_0140__oracle_gud_0020_zh-cn_topic_0000001656760969_li7258697580">如果是Linux操作系统，请使用PuTTY登录Oracle数据库主机，并执行<strong id="oracle_gud_0140__oracle_gud_0020_zh-cn_topic_0000001656760969_b119369483451">su - oracle</strong>命令，切换到<strong id="oracle_gud_0140__oracle_gud_0020_zh-cn_topic_0000001656760969_b2486163014495">oracle</strong>账户。</li>
       <li id="oracle_gud_0140__oracle_gud_0020_zh-cn_topic_0000001656760969_li1366015032013">如果是Windows操作系统，请使用系统管理员登录Oracle数据库主机。</li>
      </ul> <p></p></li>
     <li><span>执行以下命令进入RMAN。</span><p></p>
      <ul id="oracle_gud_0140__oracle_gud_0020_ul19454143574215">
       <li id="oracle_gud_0140__oracle_gud_0020_li44549351422">如果是Linux操作系统，请执行以下命令：<p id="oracle_gud_0140__oracle_gud_0020_p363075015428"><a name="oracle_gud_0140__oracle_gud_0020_li44549351422"></a><a name="oracle_gud_0020_li44549351422"></a><strong id="oracle_gud_0140__oracle_gud_0020_b154781158438">export ORACLE_SID=</strong><em id="oracle_gud_0140__oracle_gud_0020_i86308505427">实例名称</em></p> <p id="oracle_gud_0140__oracle_gud_0020_p16630205014425"><strong id="oracle_gud_0140__oracle_gud_0020_b1553717104312">rman target /</strong></p></li>
       <li id="oracle_gud_0140__oracle_gud_0020_li1991913252438">如果是Windows操作系统，请执行以下命令：
        <ol type="a" id="oracle_gud_0140__oracle_gud_0020_ol124110408264">
         <li id="oracle_gud_0140__oracle_gud_0020_li624120402267">在键盘上按<span class="uicontrol" id="oracle_gud_0140__oracle_gud_0020_oracle_gud_0016_uicontrol11819941114510">“Win+R”</span>，打开运行窗口。</li>
         <li id="oracle_gud_0140__oracle_gud_0020_li161821338277">输入<span class="parmvalue" id="oracle_gud_0140__oracle_gud_0020_parmvalue122291222476">“cmd”</span>，执行以下命令。<p id="oracle_gud_0140__oracle_gud_0020_p18919132511435"><strong id="oracle_gud_0140__oracle_gud_0020_b4919142514320">set ORACLE_SID=</strong><em id="oracle_gud_0140__oracle_gud_0020_i11919102574313">实例名称</em></p> <p id="oracle_gud_0140__oracle_gud_0020_p149191125144318"><strong id="oracle_gud_0140__oracle_gud_0020_b1191932510433">rman target /</strong></p></li>
        </ol></li>
      </ul> <p></p></li>
     <li><span>执行以下命令检验并删除失效的日志文件。</span><p></p><p><strong>crosscheck archivelog all;</strong></p> <p><strong>delete expired archivelog all;</strong></p> <p></p></li>
    </ol>
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